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Finding the Fourth Proportional to 455,650.61, 628,803.68 and 251,700.71

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Solution

The fourth proportional to 455,650.61, 628,803.68 and 251,700.71 is: 347,350.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,650.61 : 628,803.68 = 251,700.71 : x
  2. Step 2: Convert to fraction form
    455,650.61/628,803.68 = 251,700.71/x
  3. Step 3: Cross multiply
    455,650.61x = 628,803.68 × 251,700.71
  4. Step 4: Simplify right side
    455,650.61x = 158,270,328,304.09
  5. Step 5: Solve for x
    x = 158,270,328,304.09/455,650.61
  6. Step 6: Final answer
    x = 347,350.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.